638730720

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{443563}}^1$

素因数の和:443584

約数の個数: 72

約数和(自身を含む): 2179673496

約数和(自身を除く): 1540942776

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 443563, 887126, 1330689, 1774252, 2217815, 2661378, 3548504, 3992067, 4435630, 5322756, 6653445, 7097008, 7984134, 8871260, 10645512, 13306890, 14194016, 15968268, 17742520, 19960335, 21291024, 26613780, 31936536, 35485040, 39920670, 42582048, 53227560, 63873072, 70970080, 79841340, 106455120, 127746144, 159682680, 212910240, 319365360, 638730720]

約数ペア:

[(1, 638730720), (2, 319365360), (3, 212910240), (4, 159682680), (5, 127746144), (6, 106455120), (8, 79841340), (9, 70970080), (10, 63873072), (12, 53227560), (15, 42582048), (16, 39920670), (18, 35485040), (20, 31936536), (24, 26613780), (30, 21291024), (32, 19960335), (36, 17742520), (40, 15968268), (45, 14194016), (48, 13306890), (60, 10645512), (72, 8871260), (80, 7984134), (90, 7097008), (96, 6653445), (120, 5322756), (144, 4435630), (160, 3992067), (180, 3548504), (240, 2661378), (288, 2217815), (360, 1774252), (480, 1330689), (720, 887126), (1440, 443563)]